NOISSUE improve icon handling while importing and exporting instances

Now it handles formats other than png.

api/logic/icons/IconUtils.cpp

@@ -0,0 +1,62 @@
+#include "IconUtils.h"
+
+#include "FileSystem.h"
+#include <QDirIterator>
+
+#include <array>
+
+namespace {
+std::array<const char *, 6> validIconExtensions = {
+    "svg",
+    "png",
+    "ico",
+    "gif",
+    "jpg",
+    "jpeg"
+};
+}
+
+namespace IconUtils{
+
+QString findBestIconIn(const QString &folder, const QString & iconKey) {
+    int best_found = validIconExtensions.size();
+    QString best_filename;
+
+    QDirIterator it(folder, QDir::NoDotAndDotDot | QDir::Files, QDirIterator::NoIteratorFlags);
+    while (it.hasNext()) {
+        it.next();
+        auto fileInfo = it.fileInfo();
+
+        if(fileInfo.completeBaseName() != iconKey)
+            continue;
+
+        auto extension = fileInfo.suffix();
+
+        for(int i = 0; i < best_found; i++) {
+            if(extension == validIconExtensions[i]) {
+                best_found = i;
+                qDebug() << i << " : " << fileInfo.fileName();
+                best_filename = fileInfo.fileName();
+            }
+        }
+    }
+    return FS::PathCombine(folder, best_filename);
+}
+
+QString getIconFilter() {
+    QString out;
+    QTextStream stream(&out);
+    stream << '(';
+    for(size_t i = 0; i < validIconExtensions.size() - 1; i++) {
+        if(i > 0) {
+            stream << " ";
+        }
+        stream << "*." << validIconExtensions[i];
+    }
+    stream << " *." << validIconExtensions[validIconExtensions.size() - 1];
+    stream << ')';
+    return out;
+}
+
+}
+

api/logic/icons/IconUtils.h

@@ -0,0 +1,14 @@
+#pragma once
+
+#include <QString>
+#include "multimc_logic_export.h"
+
+namespace IconUtils {
+
+// Given a folder and an icon key, find 'best' of the icons with the given key in there and return its path
+MULTIMC_LOGIC_EXPORT QString findBestIconIn(const QString &folder, const QString & iconKey);
+
+// Get icon file type filter for file browser dialogs
+MULTIMC_LOGIC_EXPORT QString getIconFilter();
+
+}